Process of electric welding.



Li S. LAGHMAN.

PROCESS OF ELECTRIC WELDING APPLICATION FILED MAR.25,1912.

LAURENCE S. LAGHMAN, OF NEW YORK, VELLING COMPANY, OF LOIIGA 'ISLAND PliTENT OFFICE.

N'. Y., ASSIGNOR TU UNIVERSAL ELECTRIC CXTY, NEXV YORK, A CGRPORATION Oi? NEW LJCTRIC XVELDING,

PROGESS "-T Loeedioi..

Specification el" Letters Fatemi.

Patented Sept. 17, 1912.

i Original eppcaton iled May s, 21.997, Serial No, 372,566; ivded and this applicatien filed Merch 55,

3.9m. Serial No. 685,954.

To all w/wf/v z5 may concern: l

Be it known that I.; LAURENCE LACH- isiz'lN., aeitizen of the United States, and resident of New York, in the. county of New York and S e oi' New York, lieve invented certein 'new wel neeful improvamente in lroceeeee of aetrie lileldingS of which tlie following is epeeilioation` Tliie inver on relritee to e nietiiod of joining metal or ,bodies edge to edge by lie elec io Welding process.

The ob mi; of the invention is to niiord e :simple and easily pcrfori'ned method of join-v ing n'ietzil piel; "trip Edge to ed With-- ily prepari the.

mit the ned.

ing process suoli 'parte 'for toe electric Weld providing lateral protubei'ences projecting from the pine of or the dat surface of materiel be joined er the materiel :sed es joininf' or connecting ineens. In he electric j 'procese Snell protubei' irfiees or projections nfl-ve liereto'oi'e been einw iioyed in order to localize tl current end j 'essere in si. ill iii-ees et' the' parte te lie :'55 j. l in order to faciliter.; end eerry ont il' v 1 'er i. rar en@ invention n t ,l

` platee r parte te lie joined edge to edge are (fou, 'together by 2s. pliirelity of compareiio livel. inell welding 'pieces all ille parte of wnie ie in the seme plane and which are superimposed on the plates or pieces end ineke Contact therewith. The Welding pieces themselves, owing to their compa-re.-

35 live size or conformation, ineke but e lim ited aree of Contact will; the plates to be joined and are arranged to span or bridge the abutting or opposed edges and are elec- 'ir'icelly Welded to both plates or pieces to be joi ned et either eide of the adjacent edges.

The present processie further advante gemis in that by its employment there is not so in uch l) ui raised es when the coupling piece is provided with lateral projections :md therefore the Work, after Welding7 left in smoother condition than by the method :iliaove referred to.

'llie invention consists in the methods or' processes hereinafter more particularly diesc ibed with reference to the accompanying drawings end dien specified in the claims.

in the accompanying drawings, I show various elyles ol coupling or welding pieces which may be employed, it being understood 'lliet such drawings are for the purpose of illustrating the method in femoral and for .suoli purpose only speciie rorins or configriretion oi welding pieces and piecee to oe joined are shown.

Figure l shows a. plurality of welding pieces arranged te join or secure en to union between two plates or o metal, the Welding pieces being here Shown as rings; alternate rings being disposed on opposite Surfaces of the plates. Fig. 2 is en edge View ci such arrangement. Fig. shows e similar arrangement' with all the Welding pieces on one surface of tlie pletes.,. Fig. 4 sliowe e. similar arrangement with striplile pieces in lieu of the rings shown in the prior figures. 5 shoe im arrangement et? solid Welding pieces d., gosed on opposite surfaces of the plates.

The plates or pieces, of ziietzil 93 to be joined edge to edge may be brought .t0- gei'lier with their edges in any desired pronrn iniity or even in eontaet, in 'the drawings, for eleerness, oil tile two plates l'ieing shown es somewhat seperated.,

The plates ere brought together the de sired ,relation between e nt eerryilig electrodes 3 and 1i and seperate Welding pieces 2O placed along the opposed et any desired distance apart and so disposed es to make liet Contact with the surface oi' liotli plu-tes near the edge and span or bridge the juncture oi tlie plates. The Welding pieces may if desired be located on but one surface of' the Work as indicated in Fig. 3,

cated in Fig. l and in which case the weld` ing pieces on one surtneeinay lie-ve e steggered relation to the welding pieces on the other surface or lliey may 'be in line with each other as desired. Also the Welding pieces may be in the form of ringses shown in Figs. l and 3 or they may be solid es indiceted et and 2G in Fig.

The Welding pieces are of coimpemtively small. size es compared wit-li the pieces to be joined end Ina-ke but a. limited aree of oon-- 'met with. each plate near the edge, the area'. of Contact being 'further limited or re triated by making the contour or edges of the welding pieces curved or Circular.

For the sake of cleerness the Welding or may be located on been eurlzicee es indii 

